Marseille won 1-0 at Strasbourg thanks to a goal from midfielder Morgan Sanson.
OM therefore return to victory three days after their defeat in Porto in the Champions League.
Olympique de Marseille won 1 to 0 in Strasbourg on Friday evening at the opening of the 10th day of Ligue 1, three days after the slap (3-0) received in Porto in the Champions League.
In a lackluster match, the Marseillais won thanks to a clear strike from Morgan Sanson in the 72nd minute.
Provisional third place in the ranking
With 18 points, OM are temporarily up to Rennes, 3rd in the standings. The Strasbourg (19th), who claimed in vain for a penalty in stoppage time, suffered an eighth setback in ten days.